Finally, expression of GGT7 was positively correlated with tumor purity (r = 0.317, P = 1.53e-9), CD8+ T cells (r = 0.254, P = 2.02e-6), CD4+ T cells (r = 0.216, P = 5.54e-5), macrophages (r = 0.323, P = 1.0e-9), neutrophils (r = 0.233, P = 1.27e-5), and dendritic cells (r = 0.245, P = 5.0e-6) (Figure 8D). The gene discussed is CD8A; the disease is neoplasm.